<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>星级评分系统</title>
<style>
body,div,ul,li,p {
	margin: 0;
	padding: 0;
}

body {
	color: #666;
	font: 12px/1.5 Arial;
}

ul {
	list-style-type: none;
}

#star {
	position: relative;
	width: 600px;
	margin: 10px auto;
}

#star ul,#star span {
	float: left;
	display: inline;
	height: 19px;
	line-height: 19px;
}

#star ul {
	margin: 0 10px;
}

#star li {
	float: left;
	width: 24px;
	cursor: pointer;
	text-indent: -9999px;
	background: url(images/star.png) no-repeat;
}

#star strong {
	color: #f60;
	padding-left: 10px;
}

#star li.on {
	background-position: 0 -28px;
}

#star p {
	position: absolute;
	top: 20px;
	width: 159px;
	height: 60px;
	display: none;
	background: url(images/icon.gif) no-repeat;
	padding: 7px 10px 0;
}

#star p em {
	color: #f60;
	display: block;
	font-style: normal;
}
</style>
<script type="text/javascript">
	window.onload = function() {
		var oStar = document.getElementById("star");
		var aLi = oStar.getElementsByTagName("li");
		var oUl = oStar.getElementsByTagName("ul")[0];
		var oSpan = oStar.getElementsByTagName("span")[1];
		var oP = oStar.getElementsByTagName("p")[0];
		var i = iScore = iStar = 0;
		var aMsg = [ "很不满意|差得太离谱，与卖家描述的严重不符，非常不满", "不满意|部分有破损，与卖家描述的不符，不满意",
				"一般|质量一般，没有卖家描述的那么好", "满意|质量不错，与卖家描述的基本一致，还是挺满意的",
				"非常满意|质量非常好，与卖家描述的完全一致，非常满意" ]

		for (i = 1; i <= aLi.length; i++) {
			aLi[i - 1].index = i;
			//鼠标移过显示分数
			aLi[i - 1].onmouseover = function() {
				fnPoint(this.index);
				//浮动层显示
				oP.style.display = "block";
				//计算浮动层位置
				oP.style.left = oUl.offsetLeft + this.index * this.offsetWidth
						- 104 + "px";
				//匹配浮动层文字内容
				oP.innerHTML = "<em><b>" + this.index + "</b> 分 "
						+ aMsg[this.index - 1].match(/(.+)\|/)[1] + "</em>"
						+ aMsg[this.index - 1].match(/\|(.+)/)[1]
			};
			//鼠标离开后恢复上次评分
			aLi[i - 1].onmouseout = function() {
				fnPoint();
				//关闭浮动层
				oP.style.display = "none"
			};
			//点击后进行评分处理
			aLi[i - 1].onclick = function() {
				iStar = this.index;
				oP.style.display = "none";
				oSpan.innerHTML = "<strong>" + (this.index) + " 分</strong> ("
						+ aMsg[this.index - 1].match(/\|(.+)/)[1] + ")"
			}
		}
		//评分处理
		function fnPoint(iArg) {
			//分数赋值
			iScore = iArg || iStar;
			for (i = 0; i < aLi.length; i++)
				aLi[i].className = i < iScore ? "on" : "";
		}
	};
</script>
</head>
<body>
	<div id="star">
		<span>点击星星就能打分</span>
		<ul>
			<li><a href="javascript:;">1</a></li>
			<li><a href="javascript:;">2</a></li>
			<li><a href="javascript:;">3</a></li>
			<li><a href="javascript:;">4</a></li>
			<li><a href="javascript:;">5</a></li>
		</ul>
		<span></span>
		<p></p>
	</div>
</body>
</html>